Editor’s note: The presidential nominating contests in both parties will come down to the California primary.

For Democrats, 548 delegates are at stake — 11.5% of the total. For Republicans, 172 delegates are at stage — 6.9% of the total. Of those, for Democrats, 158 (29%) are divided proportionally on a statewide basis, while 317 (58%) are divided proportionally by congressional district, with each district providing between 5 and 8 delegates. The remaining 73 (13%) are “superdelegates.”

For Republicans, 13 (8%) are awarded statewide, with ten going to the candidate with the highest number of votes on a winner-take-all basis, and three going to “pre-determined” delegates (the State Chair, National Committeewoman, National Committeeman). Meanwhile, 159 (92%) are awarded by congressional district on a winner-take-all basis, with each district providing 3 delegates.

The result: a district-by-district battle in both parties, which we preview for you here.

CA-06: This is the first truly urban district in California, taking in the capital city of Sacramento and some of the surrounding suburbs along the I-80 and I-5. Sacramento is the most dominant center of government in the country outside of Washington, D.C., and its economy and politics reflect that fact. It has large minority populations that affect its politics to some extent. However, Sacramento is also connected to the region’s agricultural economy.

Prospects:

Democrats: Sacramento suits Clinton well: an urban district, bolstered by establishment politics and culture.

Clinton 4, Sanders 2

Republicans: A rare chance for Kasich win if, like Washington, Sacramento scorns outsiders Trump and Cruz.

Kasich 3, Trump 0, Cruz 0

Joel B. Pollak is Senior Editor-at-Large at Breitbart News. His new e-book, Leadership Secrets of the Kings and Prophets: What the Bible’s Struggles Teach Us About Today, is on sale through Amazon Kindle Direct. Follow him on Twitter at @joelpollak.